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# Quiz Mendel's Work and Probability

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Class: Date: Name: ___

Quiz – Mendel’ Work and Probability
Part 1: Matching
MENDEL’S WORK. Match each term in the WORD BANK below with its description by writing the term in the space before each number.
ALLELES
FERTILIZATION
GENETICS
HYBRID
RECESSIVE ALLELE

DOMINANT ALLELE
GENE
HEREDITY
PUREBRED
TRAIT

1. A characteristic that an organism can pass on to its offspring through its genes.
2. An allele that is masked when a dominant allele is present.
3. An allele whose trait always shows up in the organism when the allele is present.
4. An organism that has two different alleles for a trait; an organism that is heterozygous for a particular trait.
5. Factor that control a trait
6. The different forms of a gene
7. The offspring of many generations that have the same traits
8. The passing of physical characteristics from parents to offspring.
9. The process in which an egg cell and a sperm cell join to form a new organism.
10. The scientific study of heredity

PROBABILITY. Match each term in the WORD BANK below with its description by writing the term in the space before each number.
CODOMINANCE
HETEROZYGOUS
PHENOTYPE
PUNNETT SQUARE

GENOTYPE
HOMOZYGOUS
PROBABILITY

11. A chart that shows all the possible combinations of alleles that can result from a genetic cross.
12. A condition in which neither of two alleles of a gene is dominant or recessive.
13. A number that describes how likely it is that an event will occur.
14. An organism’s genetic makeup, or allele combinations.
15. An organism’s physical appearance, or visible traits.
16. Having two different alleles for a trait.
17. Having two identical alleles for a trait.
Part 2: Solve the following Mendelian genetics problems:
A. A homozygous dominant brown mouse is crossed with a heterozygous brown mouse (tan is the recessive color).
PUNNETT SQUARE GENOTYPIC RATIO PHENOTYPIC RATIO

22.
23.
24.
25.

26. Hom dominant = __________

27. Heterozygous = ___________

28. Hom recessive = ___________
29. Brown = ______________

30. Tan = _________________

B. Pea plants are either tall (T) or short (t), and have green (G) or yellow (g) pods
PUNNETT SQUARE
T=Tall t=short G=Green g=yellow GENOTYPIC RATIO PHENOTYPIC RATIO
TtGg X TtGg

39. TTGG = _____
40. TTGg = _____
41. TTgg = ______

42. TtGG = _____
43. TtGg = ______
44. Ttgg = ______ 45. ttGG = ______
46. ttGg = ______
47. ttgg = ______ 48. Tall, green = ______
49. Tall, yellow = _____
50. Short, green = ____
51. Short, yellow = ___

Part 3: Solve the following Codominance genetics problem:
In chickens, feather color shows codominance. A black chicken has the genotype BB. A white chicken has the genotype WW. Heterozygous chickens are checkered with a heterozygous genotype BW.

Cross a checkered chicken 52.______________ with a white chicken 53.______________. Show the Punnett Square (#s 54-57)

58. 59. 60.

% Black chicken % Checkered chicken % White chicken

= = =

KEY -- Quiz – Mendel’ Work and Probability

Part 1: Matching
WORD BANK: MENDEL’S WORK. Match the terms with its description by writing the term/s in the space before each number.
ALLELES
FERTILIZATION
GENETICS
HYBRID
RECESSIVE ALLELE

DOMINANT ALLELE
GENE
HEREDITY
PUREBRED
TRAIT

Trait
1. A characteristic that an organism can pass on to its offspring through its genes.
Recessive Allele
2. An allele that is masked when a dominant allele is present.
Dominant Allele
3. An allele whose trait always shows up in the organism when the allele is present.
Hybrid
4. An organism that has two different alleles for a trait; an organism that is heterozygous for a particular trait.
Gene
5. Factor that control a trait
Alleles
6. The different forms of a gene
Purebred
7. The offspring of many generations that have the same traits
Heredity
8. The passing of physical characteristics from parents to offspring.
Fertilization
9. The process in which an egg cell and a sperm cell join to form a new organism.
Genetics
10. The scientific study of heredity

WORD BANK: PROBABILITY. Match the terms with its description by writing the term/s in the space before each number.
CODOMINANCE
HETEROZYGOUS
PHENOTYPE
PUNNETT SQUARE

GENOTYPE
HOMOZYGOUS
PROBABILITY

Punnett square
11. A chart that shows all the possible combinations of alleles that can result from a genetic cross.
Codominance
12. A condition in which neither of two alleles of a gene is dominant or recessive.
Probability
13. A number that describes how likely it is that an event will occur.
Genotype
14. An organism’s genetic makeup, or allele combinations.
Phenotype
15. An organism’s physical appearance, or visible traits.
Heterozygous
16. Having two different alleles for a trait.
Homozygous
17. Having two identical alleles for a trait.

Part 2: Solve the following Mendelian genetics problems:

A. A homozygous dominant brown mouse is crossed with a heterozygous brown mouse (tan is the recessive color).
PUNNETT SQUARE GENOTYPIC RATIO PHENOTYPIC RATIO

22.
23.

24.
25.

26. Hom dominant = 2/4 or 1/2

27. Heterozygous = 2/4 or 1/2

28. Hom recessive = ___0___
29. Brown = 4/4_________

30. Tan = 0_________

B. Pea plants are either tall (T) or short (t), and have green (G) or yellow (g) pods
PUNNETT SQUARE
T=Tall t=short G=Green g=yellow
(#s 31-38) GENOTYPIC RATIO PHENOTYPIC RATIO
TtGg X TtGg

39. TTGG = 1/16
40. TTGg = 2/16 41. TTgg = 1/16

42. TtGG = 2/16
43. TtGg = 4/16
44. Ttgg = 2/16 45. ttGG = 1/16
46. ttGg = 2/16
47. ttgg = 1/16 48. Tall, green = 9/16
49. Tall, yellow = 3/16
50. Short, green = 3/16
51. Short, yellow = 1/16

Part 3: Solve the following Codominance genetics problem:

In chickens, feather color shows codominance. A black chicken has the genotype BB. A white chicken has the genotype WW. Heterozygous chickens are checkered with a heterozygous genotype BW.

Cross a checkered chicken 52._ BW with a white chicken 53. _ WW . Show the Punnett Square (#s 54-57)

58. 59. 60.

% Black chicken % Checkered chicken % White chicken

Total Pages
4
Included
Teaching Duration
30 Minutes

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